Ethyl 5-(4-nitrophenyl)-1,3,4-oxadiazole-2-carboxylate CAS 151097-76-6
| CAS No. | 151097-76-6 |
| Molecular Formula | C11H9N3O5 |
| Molecular Weight | 263.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ethyl 5-(4-nitrophenyl)-1,3,4-oxadiazole-2-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Ethyl 5-(4-nitrophenyl)-1,3,4-oxadiazole-2-carboxylate (CAS 151097-76-6), molecular formula C11H9N3O5 and molecular weight 263.21 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl 5-(4-nitrophenyl)-1,3,4-oxadiazole-2-carboxylate (C11H9N3O5) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C11H9N3O5 |
| Molecular Weight | 263.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2000 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- Ethyl 5-(3-nitrophenyl)-1,3,4-oxadiazole-2-carboxylate (CAS 1401521-92-3)
- 6-(3-Nitrophenyl)-2-oxo-1,2,3,6-tetrahydropyrimidine-4-carboxylic acid (CAS 304443-35-4)
- Ethyl 3-(3-nitrophenyl)-1,2,4-oxadiazole-5-carboxylate (CAS 73185-75-8)
- 1-(2-Nitrophenyl)-4-oxocyclohexanecarboxylic Acid (CAS 1385694-66-5)
- 1-(4-Nitrophenyl)-4-oxocyclohexanecarboxylic Acid (CAS 1408074-40-7)
- 2-(4-(4-Nitrophenyl)thiazol-2-yl)acetamide (CAS 306935-90-0)
- N-[4-(3-Nitrophenyl)-2-thiazolyl]acetamide (CAS 53173-92-5)
- 1-(4-(3-Nitrophenyl)thiazol-2-yl)guanidine (CAS 83831-32-7)
Recommended Standards
- (2R,4S,5R)-5-(6-Amino-9H-purin-9-yl)-4-hydroxy-3-oxotetrahydrofuran-2-carbaldehyde (CAS 150259-11-3)
- 4'-(Trifluoromethoxy)-[1,1'-biphenyl]-4-carbonitrile (CAS 157788-40-4)
- 1-Bromo-2-(3,3-dimethylbutoxy)cyclohexane (CAS 1478474-71-3)
- 2-Amino-3-(2-methyl-4-(trifluoromethoxy)phenyl)propanoic acid (CAS 1706428-65-0)
- (S)-((4-bromophenyl)(hydroxy)methyl)phosphonic acid (CAS 1462329-72-1)
- 2-Chloro-4-fluoro-3-methoxyaniline (CAS 2090538-46-6)
- 5-((4-Chlorobenzyl)thio)-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carbaldehyde (CAS 321553-32-6)
- 3-Chloro-2-ethoxy-6-fluorobenzaldehyde (CAS 2386527-02-0)
- N-((4-Phenyl-4H-1,2,4-triazol-3-yl)methyl)-6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine-3-carboxamide (CAS 1428351-38-5)
- 5-(3-Ethyl-4,5-diphenyloxazol-2(3H)-ylidene)-2-thioxothiazolidin-4-one (CAS 87805-01-4)
- 2-Methyl-1H-indole-7-carbaldehyde (CAS 914383-20-3)
- 5,6-Dihydro-5,5-dimethyl-2-(4-morpholinyl)-7(4H)-benzothiazolone (CAS 15091-04-0)
- Pyridine-3-boronic acid (CAS 1692-25-7)
- Insulin Degludec Impurity 20 (CAS CATO-C4X-215720)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com